Definition

Noun: - Central sulcus: A prominent groove or furrow in the cerebral cortex of each brain hemisphere. It runs in a roughly vertical direction on the lateral surface, separating the frontal lobe (anterior) from the parietal lobe (posterior). It is a key anatomical landmark.

Usage Examples

• Noun:
  • The primary motor cortex is located just anterior to the Rolando's fissure.
  • Neurologists use Rolando's fissure as a critical reference point for mapping brain function.
  • The MRI scan clearly shows the depth and path of Rolando's fissure.

Advanced Usage

• "The fissure of Rolando": An alternative, formal name for the same anatomical structure.
  • The lesion was found immediately posterior to the fissure of Rolando.

Variants and Related Words

• Central sulcus (n): The modern and more commonly used anatomical term synonymous with Rolando's fissure.
  • The hand area of the motor cortex lies along the central sulcus.
• Sulcus (n): A general term for any groove or furrow on the surface of the brain.
• Fissure (n): A deep groove, often used interchangeably with 'sulcus' for major divisions like Rolando's fissure.

Synonyms

• Central sulcus: The direct and primary synonym in contemporary neuroanatomy.

Notes on Meaning

This term is an eponym, named after the Italian anatomist Luigi Rolando. While "Rolando's fissure" is historically significant and still understood, the term "central sulcus" is the preferred and more precise terminology in modern scientific and medical contexts.

Noun

1. a brain fissure extending upward on the lateral surface of both hemispheres; separates the frontal and parietal lobes